3 400 Series s To inspect Operation 3-4 Rockershaft diameter Rocker shaft to rocker lever clearance H1037 16 Workshop Manual, TPD 1458E, issue 3 - Perkins Confidential: Green Engine Diameter mm (in) Standard Service limi 403C-11 11,65 - 11, 403C-15 67 (0.4587 - 0.4595) 11,57 (0.4555 404C-22 14,95 - 14, 404C-22T 97 (0.5886 - 0.5894) 14,87 (0.5854 Engine Clearance mm (in) Standard Service limi 403C-11 0,032 - 0,06 403C-15 8 (0.00126 - 0.00268) 0,2 (0.008) 404C-22 0,030 - 0,09 404C-22T 3 (0.00120 - 0.00366) 0,2 (0.008)